30915073949 has 2 divisors, whose sum is σ = 30915073950. Its totient is φ = 30915073948.

The previous prime is 30915073921. The next prime is 30915073963. The reversal of 30915073949 is 94937051903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27458809849 + 3456264100 = 165707^2 + 58790^2 .

It is a cyclic number.

It is not a de Polignac number, because 30915073949 - 2¹² = 30915069853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30915073897 and 30915073906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30915673949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15457536974 + 15457536975.

It is an arithmetic number, because the mean of its divisors is an integer number (15457536975).

Almost surely, 2^30915073949 is an apocalyptic number.

It is an amenable number.

30915073949 is a deficient number, since it is larger than the sum of its proper divisors (1).

30915073949 is an equidigital number, since it uses as much as digits as its factorization.

30915073949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 918540, while the sum is 50.

The spelling of 30915073949 in words is "thirty billion, nine hundred fifteen million, seventy-three thousand, nine hundred forty-nine".